Window construction



March 15, 1932.

E. D BARRINGER WINDOW CONSTRUCTION Filed Aug. 10, 1931 4 Sheets-Sheet l YHI H M 1 I i 25 March 15, 1932. DQBA F Q RINGER WINDOW CONSTRUCTION 4 Sheets-Sheet 4 Filed Aug. 10. 1951 3 inventor dttozma ITEM.

51. MER D. Emmwam.

Patented Mar. 15, 1932 E ATENT QFFICE ELLIEE I). BARBIEGEE, OF CLEVELAND, OHIO VJIZ'JIDOW CGNSTRUCTEGN Application filed August 19, 1381. Serial No. 556,292.

Many forms of weather strips have been devised and are in wide use for making weather tight joints present in windows, doors, and similar devices where it is de sired to protectcomplet ly the interior of a building from exterior .aeather conditions. Many forms of these strips serve efiiciently the purposes for which they have been designed, but so far there have been none designed for efficiently excluding the weather, which will be self-compensatingfor differences bet veen the parts of the joints or openings being protected arising; from expansion and contraction of the cooperat ng parts, while, in the case of windows and the like, serving as a means for protecting the window frame against wear by reducing friction between the frame and sash and cushionthe sash to prevent rattling thereof.

The present invention relates to a window construction in which there is employed a novel type of weather strip which is designed to accomplish the foresaid desirable effects in a manner assuri the complete exclusion of all elements of the weather t- -irough the provision of a weather 5 ip which is easily installed and easily manufactured.

The invention will he more readily understood by reference to the accompanying drawings, in which- Figure 1 represents a section through a window construction embracing the features of the present invention, and showing the upper and lower window sashes provided with a form of weather strip made in accordance with this invention.

Figure 2 is 21 vi i V but showing a modified form of weather strip applied to one of the window sashes, specificaLy tl e upper sash, corresponding to the upper sash in Figure 1.

Figure 3 is a view similar to Figure 2 showing still another form of strip suitable for (his purpose.

Figure l is a view similar to Figures 2 and 3, showing still a further modified form of strip.

Figure 5 is a view simi ar to the preceding views illustrating a still i'urther modification or" the strip.

ilar o i ures 6 and 7 are views similar to the dmg views showing a modified form of wit-n 1I f I r Y t I ff t t f L suitable o1 someuna c1 eren ypeo i seahation. Fi 'ures 8 to 13 inclusive are also similar and 15 are views showing the strip of the general type ilures 6 and 7 and perspective View of one form J61 which is suitable for inthe window sash and the bearing surface to protect the window frame at when the sash is separated.

rring more particularly to the draw nd especially to Figure 1, numeral 1 seats the window frame, 2 and 3 are window stops and 4 is a parting strip. Between the stop 2 and the parting strip 4 there operates a lower window sash 5, while between the stop 3 and the parting strip 4 there a u iper window sash 6. It will be linden that the window panes are carried by l in the usual manner.

bsmred that the joints between L its cooperating parts are proorm of weather strip which is itcctively prevent the entrance of meat ier elements to the interior of the building through the cracks of the windows. Since the weather strip construction is dupliat 8 to sel we as a guide and bearing member against which the sash 5 18 adapted to slide the sash is raised and lowered to the window frame. The remaining portions 9 inmediate the portions 8 rest against the we 1, and since the weather strip member ghtly held betw the stop 2 and frame 1, it will be apparent that the provision of this strip member will effectively prevent any wearing on the frame 1 through operation of the window and also prevents binding of the window. It will be also noted that the strip member 7 terminates in a substantially straight end member 10.

It will also be seen that the sash 5 is grooved to receive a second weather strip member 11, which is secured to the sash by nails or screws, or other fastening means indicated at 12-. It will be seen in this form of the strip that the member 11 is bent into a substantially 8 form, the legs of which are substantially parallel forming a pair of channels into the outer one of which the end 10 of the strip member 7 is received. It will also be seen that the window frame 1 is grooved to frictionally receive between itself and the parting strip 4 a third weather strip member 13 which is shaped in the form of an inverted L, one side of which projects into the inside channel of the member 11, suitably secured to prevent slipping, and if the width of the space between the window frame 1 and the sash 5 varies through swelling and contraction of the frame or sash, or both, there will result a corresponding effect upon the weather strip member 7 which will tend to force this member to close or open the clearance space between the sash and frame, such movement will be transmitted from the strip m in her 11 to the end 10 which will thus assure a self-adjustment of the parts of the strip to maintain at all times a complete closure of the cracks of the window.

In the form illustrated in Figure 2, it will be observed that the strip member 7a, corresponding to the member 7 in Figure 1, has its upper end 10a bent in the form of an inverted U to provide a channel for the reception of the outer leg of the weather strip member 11a which is here bent in the form of an inverted M, forming inner and outer channels into which project the legs of the turned end 1065 of the strip member 7a and the side of the third strip member 13a which is shaped in the form of an inverted L as in the construction of Figure 1. The stop 3 and the window frame 1 are grooved to frictionally receive and tightly hold the strip member 7 a and 13a as previously described, the strip member 18a being tightly held between the window frame 1 and the parting strip 4 as previously described. I

In Figure 3 the sash 6 is provided with a groove for the reception of the end 10?) of the strip member 7?), corresponding to the strip member 7 and 7a of the precedingly described modifications. In this form of the de vice the strip member 115, which is nailed or otherwise suitably secured to the sash 6, is bent downwardlyrand then upwardly to form a U-shaped channel, the end 105 of the strip member 76 being received between one leg of this U channel and the sash 6, while projecting into the U channel proper, is one side of the inverted L-shaped strip member 136, the other side of which is frictionally held between the parting strip l and the window frame 1.

Figure 4c shows a somewhat simpler form of installation wherein th strip member terminates in the straight end portion 100 which is received when installed between the sash 6 and one side of the L-shaped member 110 which is secured to the sash 6. It will be observed that in this instance the member 110 is simply bent'at right angles and does not have its depending side bent back upon itself, but terminates in a straight member. [is before, the member 110 is secured by nails or other fastening means to the sash 6. As before, a reverse and inverted L-shaped member 130 is secured between the parting strip 4 and the window frame 1. This member serves as a bearing to protect the member 110 from catching into the frame 1.

In Figure 5 the member 11d, nailed or otherwise secured to the sash 6, is bent at right angles downwardly and then folded back upon itself and then bent over to form a U-shaped channel, and in this modification, the weather strip element 13d secured between the parting strip 1 and the window frame 1 has its depending side lengthened and upturned, as indicated at 1 1 to fit into the inverted Ll-shaped channel 15, formed by the fold in the depending side of the weather strip element 11d. There is also provided in this case the weather strip element 765 which terminates in the straight end portion 100? received between the window sash 6 and the depending side of the weather strip element- 11d.

In Figures 6 and 7 there are shown two modifications of a generally different type of installation from that described in Figures 1 to 5 inclusive. It will be noted fro-m the drawings that in Figures 6 and 7 the instal lation of the strip elements is in general at right angles to the form of installation shown in Figures 1 to 5 inclusive,although the elements making up the strip installation are generally the same as in the preceding illustrations.

In F igure 6, as before, the strip element 76 is secured in the groove cut in the stop 3. and is then bent inwardly as shown at 16 and then outwardly as at 1.7, forming a U-shaped channel. The weather strip member 116 is bent inwardly as indicated at 18 forming a U-shaped channel in which the portion 17 of the strip element 76 is received and is then bent outwardly at 19 forming a U-shaped channel which is for the reception of the end portion 20 of the strip element 130, which is now bent into a Z-shape as will be apparent from Figure 6 but which is still frictionally retained between the parting strip 4: and the window frame 1. The weather strip member 116 is still fastened to the sash 6 by av nail or screw, or other fastening device, and is relatively deeply grooved for the reception of the bent portion of the three strip elements as will be apparent from the drawin s.

n Figure 7 there is again the strip element 7f held in the groove in the window stop 3 and in this modification the strip element 11f is secured to the sash 6 between the sash and the frame 1. This strip 11f is extended up into the recess provided in the sash 6 being bent inwardly and then outwardly to form a U-shaped channel 21 in which channel is received the inwardly projecting'end 10f of the strip member 7 f. In this form the strip member 13f is frictionally secured between the parting strip 4 of the window frame 1 as in the previous cases, but extends inwardly and is then bent downwardly and outwardly as indicated at 22 to form a U-shaped channel enclosing a bent portion of the other two window strip elements.

Figures 8 to 13 inclusive show a type of installation generally similar to that shown in Figures 1 to 5 inclusive.

In Figure '8 the strip 79 is again held in the groove in the stop 3 and terminates in the end portion 10g which is bent flatly upon itself. The weather strip element 119 is secured to the sash intermediate the sash 6 and parting strip 4 and is bent downwardly to form a depending leg 23, and then upwardly forming the upstanding leg 24, and then downwardly again forming the depending leg 25. Between the legs 23 and 24 there is thereby formed a U-shaped channel which receives the depending side'26 of the weather strip member 139 which is again frictionally held between the parting strip 4 and the window frame member 1. The end 109 is interlocked with the member 119 in the channel between the legs 24 and 25.

In Figure 9 the weather strip element 7h is secured in the window stop member 3 and has its end 10h bent flatly back upon itself and upwardly as shown at 26 forming a U-shaped channel for the reception of a second U-shaped channel formed by bending the weather strip member 11h first down-- wardly, as at 27, and then upwardly as at 28, there being received within this channel formed between the sides 27 and 28 the de pending leg 29 formed by bending the strip 13h at right angles downwardly.

In Figure 10, the weather strip member 7% has its end portion 10d bent flatly down upon itself and the weather strip 112' is bent downwardly as shown at 30, then upwardly as at 31, and downwardly again at 32. The third weather strip element 1311 is bent downwardly as shown at 33, then flatly back against itself as at 34, and then downwardly to form the leg 35. It will be seen that the channel destop 3, and has its end 10; folded flatly down.- I

wardly upon itself and then upwardly to form the side 36 which bears against the window frame 1. The weather strip element is again secured to the sash '6 and is bent downwardly to form the side 37, and then upwardly to formthe side 38, and then downwardly to form the side .39. It will therefore be seen that there is a U-shaped channel formed between the sides 37 and 38 and an inverted U- shaped channel between the sides 38 and 39. As before, between the parting strip 4 and the window frame there is positioned a weather strip element 13y' which is bent downwardly at 40 to form a leg projecting to the U-shaped channel between the sides37 and 38 of the weather strip element llj, the side or leg 39 of the weather strip element 13 being positioned in the channel formed between the ends 107' and the side 36 of the weather strip element 77', thus the bent-over end 107' being positioned in the inverted channel between the sides 38 and '39.

In Figure 12 the strip 7 k is as before held in the window strip 3 and has its end 10k en'- gag'ing the window frame and is bent flatly downwardly against itself and then upwardly to form the side 41, thus defining a U- shaped channel between this side 41 and the bent-over end portion 1010. "As before, the weather strip member 1110 is secured to the sash 6 and is bent down in engagement with the sash 6 forming the side 42, and is then bent upwardly forming the side 43 and then downwardly forming the side 44. The weather strip member 1310 secured between the parting strip 4 and the window frame 1 is bent downwardly as shown at 45, this bent portion 45 projecting into the channel defined between the sides 42 and 43 of the weather strip element 11k, the upstanding member 41 of the weather strip member 7k being positioned within the inverted. channel between the sides 43 and 44, the side 44being in turn positioned within the channel formedbetween the members 41 and 1070 of the weather strip element 770. 1

In Figure 13 the strip element 7m is as be fore engaged in the groove in the stop 3, and in this instance the end portion 10m is bent so as to be spaced away from the window before, secured to the sides 6 of the window sash is the element 11m whichis bent downwardly to form the side 47 and then upwardly to form the side 48,. thus forming a channel which is enclosed by the channel between the sides 46 and m 'of the weather strip 7%. The element 11912 is then continued, is bent downwardly to form the side 4-9. this side 49 being positioned between the .end portion 10m ofithe weather strip element 7 m and the window frame 1. .Also, as before, positioned between the-parting strip at and the window frame 1 there is the weather strip element 13m which extends inwardly and is bent downwardly at right angles to, form the side 50, whichis enclosed in'the channel formed between the sides lZ-and 48 which-sides are also enclosed between the'sides 46' and 10a of the weather stripelement 7m.

" Figures ltand show atype of installation' somewhat similar to that illustrated in Figures 6 and 7 in that, as in these aforesaid figures, the installation is made in a plane at right angles to the installation of Figures 8 to '13 inclusive.

In Figure let the weather strip element 7 n is held in the window stop 3 and is bent i11- wardly as shown at 10%, then upwardly and outwardly to form the side 51. Again secured to the sash 6 is the weather striplln which extends outwardly and is then bent inwardly to form the side 52, and then downwardly and outwardly to form the side 53. The portion 51 of the weather strip element 7% extends into the channel formed between the side 11% and the side 52 thereof, there being a channel between the sides 52 and 53 of the element 111% which receives the side 54: of the weather strip element 13% which now is frictionally held in a groove in the parting strip 4.. In Figur 15 the weather strip element 70 is, as before, held in the groove in the window stop 3 and has its end 100 bent inwardly, then downwardly, and outwardly to form the side 55'. In this modification the weather strip element 110 is secured to the sash 6 between the sash and the window frame 1 and projects inwardly as shown at 56, which portion is bent flatly back upon itself at 57 and then upwardly and inwardly as shown at 58. Again positioned'bet veen the parting strip 4 and the window frame 1 is the weather strip element 130 which projects inwardly and is bent downwardly as shown at 59 and then outwardly at60 to form a U-shaped channel enclosing the remaining weather strip construotion. The portion 55 of the weather strip element is disposed in the channel formed between the sides 57 and 58 of the Weatherstrip element 110, this entire construction'being enclosed by the sides 180, and 60' of the aforesaid weather strip memher 130.

'In Figure 16 there is shown in perspective one form of the weather strip member generally designated at 7 in the above description, its projections 8 being adapted in each case to bear against the-window sash, thus lessening friction on the window frame and preventing rattling of the sash. The configuration of a convenient channel in which this strip element 7 terminates is indicated at thebend 10 relatively adjacent one end of the strip 7 and the side 61. i

In the above description, it will become apparent that the present invention is composed of a three-part window strip, one part 0; which is secured within a window stop,.a second part ofwhich is secured to the window sash by a nail or screw or similar fasteninr; means, the third part being held frictionally or otherwise within the parting strip either within the parting strip itself, or between this parting strip and the window frame, these parts being closely cooperative to close the joints between the window stop and the frame to prevent entrance of air therein. The strip itself is obviously very easily 'istalled requiring a minimum amount of work on the sash. In some instances the efficiency and simplicity of installation may be increased by using one type of strip for the upper sash and another type of strip for the lower sash, conditions of the window construction where the installa ion is being made being the dcterminingfactor in this instance, as will be obvious to anyone familiarwith installing weather strips. interfere in any way with the removal ofv the sash for repairing the sash cord or the sash, nor does the groove in the sash for the pulley cord interfere in any way with the efficiency of the strip, since the continuityof the strip is not interrupted anywhere; being installed .1 the corner and being protected by the parting strip, it is virtually impossible to damage the strip, and further there is no danger of its catching on the pulleys or the sash cord. It will also be seen that each of the illustrated forms provides at least five passages through which the .air must'travel to get behind the window with the exception of the form shown in Figure 3, which form, while generally satisfactory does not give quite as much pro-- tection as the other forms herein illustrated and described. Its simplicity and ease of installation however render it meritorious. In the case where there are five passages for the air, there will be four complete reversals of direction that the elements must pass through before entering the house, thus'giv ing maximum protection with minimum amount of metal.

It will also be apparent that the invention is capable of many modifications without departing from the inventive concept. It is understood that it is intended and desired to embrace within the scope of this invention The s rip does not such modifications and changes as may be necessary to adaptit to varying conditions and uses.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is l. A Window construction comprising the combination with a window frame, a window stop, a parting strip and a window sash intermediate the parting strip and stop, of a three part weather strip comprising a member frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash and forming a guide for the sash, asecond weather strip member secured to the sash and bent at right angles in engagement with the sash, then bent again to form a U-shaped channel and bent a third time to form an inverted U -shaped channel enclosing the first member adjacent its other end and being disposed between the said first member and the window frame, and a third weather strip member movably secured between the window frame and parting strip, and having a portion thereof projecting into the aforesaid U-shaped channel.

2. A window construction comprising the combination with a window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three part weather strip comprising a member intermediate the window frame and sash and forming a guide for the sash, a second member mounted upon the sash in contacting relationship with the aforesaid member, and a third member slidably arranged between the window frame and parting strip adapted to engage the member mounted upon the sash.

3. .A window construction comprising the combination with a window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three partweather strip comprising a member intermediate the window frame and sash, the member being slidably mounted within the window stop, the said member being provided with outstanding portions forming guides for the sash, the remaining portions of the member engaging the window frame, a second window stripmember mounted upon the sash and'contacting with the aforesaid member, and a third member slidably arranged between the window frame andparting strip adapted to engage the member mounted upon the sash. j

4. A window construction comprising the combination with a window frame, a window stop, a parting strip and a window sash intermediate the parting strip and stop, of a three part weather strip comprising a member intermediate the window frame and sash and forming a guide for the sashya second member mounted upon the sash in contacting relationship with the aforesaid member,

anda third member movably positioned between the parting strip and the window frame and being adapted to adjust itself when expansion and contraction between the sash and frame takes place.

5. A window construction comprising the combination with a window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three part weather strip comprising'a memger frictionally held at one end within the stop and positioned intermediate the window frame and sash and forming a guide for the sash, the said member being bent adj acent its other end to form a channel of inverted U-shape, a second weather strip member secured to the sash and bentvat right angles in engagement with the sash and then bent again to form a U-shaped channel, then bent flatly back upon itself to form a double bend, and then a fourth time in a direction parallel to the double bend to form therewith v a second U-shaped channel, the bent portion of the first member being enclosed in this U-shaped channel, and a third weather strip member movably secured between the window frame and parting strip and being bent to have a portion thereof projecting into the first of the aforesaid U-shaped channels.

-6. A window construction comprising the combination with a window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three part weather strip comprising a member frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash to form a guide for the sash, the said member being bent adjacent its other end so that the bent portion lies adjacent the sash, a second weather strip member secured to the sash and bent at right angles to form a portion overlying the said bent end portion of the first member, the said second member then being bent to form a substantially U-shaped channel, and a third weather strip member secured between the window frame and the parting strip and being bent to have a portion thereof enclosed in the said U-shaped channel.

7. A window construction comprising the combination with. a window frame, a window stop, a parting strip, and a window sash in termediate the parting three part weather strip comprising a mem; ber frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash to form a guide for the sash the said weather strip member being bent adjacent its other end so as to have a portion lying adjacent the said sash, a second'weather strip member bent substantially at right angles and having a' portion overlying the said bent in portion of the first mentioned weather strip part, and a third weather strip member secured between the strip and stop, of a window frame and parting strip and being bent to form a portion positioned intermediate the said bent portion of the second member and the window frame.

8. A window construction comprising the combination with a window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three part weather strip comprising a member frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash and forming a guide for the sash, the said member being bent at a point adjacent its other end to form a portion 1ying adjacent the said sash, a second member secured to the said sash and being bent downwardly to overlie the bent portion of the first member, and then being bent doubly back upon itself, and then bent a third time to form an inverted U-shaped channel, and a third weather strip member secured between the window frame and parting strip and having a portion thereof bent at substantially right angles and then bent again to form a U-shaped channel, the sides of which U-shaped channel interlock with the sides of the said inverted U-sha ied channel.

9. A window construction comprising the combination with a window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three part weather strip comprising a member frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash and forming a guide for the sash, the said member being bentjaccnt its other end to project horizontally into the sash and then outwardly to form a laterally reclining U-shaped channel, a second weather strip member secured to the sash and extending between the said sash and parting strip and then bent'inwardly to pro- 7 ject horizontally into the sash and then out wardly to form a' second U-shaped channel within the first U-shaped channel and substantially registering therewith, and a third weather strip member secured between the window frame and parting strip and having a portion thereof extending within the said second Ushaped channel.

10. A window construction comprising the combination with a window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three part weather strip comprising a member frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash and forming a guide for the sash, and being bent at substantially U-shaped channel of the second member and the bent portion of the first member.

11. A window construction comprising the combination with a window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three part weather strip comprising a member frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash and forming a guide for the sash, the said member having its other end bent flatly upon itself and positioned intremediate the sash and frame but spaced apart therefrom, a second weather strip'member secured to the sash and bent at substantially right angles in engagement with the sash and thenbent again to form a U-shaped channel member, said second member being then bent a third time to form an inverted U-shaped channel member enclosing the bent in portion of the said first member, and a third weather strip member secured interme diate the parting strip ofa window frame and having a portion bent to enter the said U- shaped channel of the second weather strip member, the bent portion of the said'third member being bent again flatly upon itself to closely fill the said U-shaped channel.

12. A window construction comprising the combination with a window frame, a window stop, a parting strip, and a' window sash intermediate the parting strip and stop, of a three part weather strip comprising a member frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash and forming a guide for the sash, the said member being bent flatly back upon itself at a point adjacent its other end and then being bent again to form a side adjacent the sash to define a U-shaped chan nel, a second weather strip member secured to thesash and being bent to form a U-shaped channel enclosed within and registering with the first U-shaped channel of the first mentioned member, the third weather strip member secured between the parting strip and frame and being bent to have a portion entering into and enclosed by the said second U- shaped channel of the second weather strip member to substantially completely fill the space of the channel.

13. A window construction comprising the combination with a window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three part weather strip comprising a member frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash and forming a guide for the sash, and having a portion toward its other end bent to occupy a space substantially midway between the said sash and frame, a second weather strip member secured to the sash being bent adjacent the first and then again to form a U-shaped channel, the said member being bent a third time to form an inverted U-shaped channel enclosing the bent port-ion and the first member, and being substantially filled thereby, and a third weather strip member bent to produce and substan tially fill the U-shaped channed of the second member and then being bent to form an inverted U-shaped channel enclosing and substantially engaging the inverted U-shaped channel of the second member.

14. A window construction comprising the combination with a window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three part weather strip comprising a member frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash and forming a guide for the sash, the said member having a portion bent back upon itself and then bent again to form a U-shaped channel member, one side of which rests adjacent the said sash, a second weather strip member secured to the sash being bent to form a U-shaped channel, and then an inverted U-shaped channel enclosing and substantially registering with the bent portions of the said first member, and a third weather strip member bent to interengage with and be enclosed by the said U- shaped channel with the second member.

15. A window construction comprising the combination with a window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three part weather strip comprising a member frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash and forming a guide for the sash, the said member extending adjacent the window frame to a point closely adjacent the parting strip and then being bent flatly upon itself and bent again to form a U-shaped channel, a second weather strip member secured to the window sash and being bent to form a U-shaped channel and an inverted U- shaped channel interlocking with the U- shaped channel of the first member, and a third weather strip member secured between he window frame and parting strip and being bent at right angles to form a portion projecting into and enclosed by the U-shaped channel, the said third weather strip member substantially filling the space between the said parting strip and the other two members.

16. A window construction comprising the combination with a window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three part Weather strip comprising a member frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash and forming a guide for the sash, and having a portion bent flatly back upon itself and then bent again to form a U- shaped channel, one side of which engages with said sash, a second Weather strip member bent to register and enclose the convolutions of the first member, and a third weather strip member positioned between the Window frame and parting strip and having a portion bent to project between adjacent bends of the said second member.

17. A window construction comprising the combination with a window frame, a window stop, a parting strip, and awindow sash intermediate the parting strip and stop, of a three part weather strip comprising a member frictionally held adjacent one end within the stop and positioned intermediate the window frame and sash and forming a guide for the sash, the said member having a bent portion projecting horizontally into the window sash and being bent again to form a U-shaped channel, a second member secured to the sash and being bent to form a U-shaped channel within the U-shaped channel of the first member and having its bends interlocking with the said first member, and a third weather strip member slidably mounted in the parting strip and projecting between the convolutions of the said second member to closely inter-engage therewith.

18. A window construction comprising the combination with a Window frame, a window stop, a parting strip, and a window sash intermediate the parting strip and stop, of a three part weather stri comprising a member frictionally held ad acent one end within the stop and positioned intermediate the win-' dow frame and sash and forming a guide for the sash and having a portion bent to project horizontally into the said window sash, a. second weather strip member secured to the sash intermediate the sash and frame and being bent to form a U-shaped channel interengaging with the U-shaped channel of the said first member, and a third weather strip member secured between the parting strip and the window sash and projecting hori- 'zontally into the said window sash and being bent into a U-shaped channel enclosing the convolutions of the said first two members.

In testimony whereof I affix my signature.

ELMER D. BARRINGER. 

